000 00273nam a2200121Ia 4500
008 220201s1969 xx 000 0 eng d
082 _a692.5
_bDUT
100 _aDutta, B. N.
245 0 _aEstimating and costing
260 _aLucknow
_c1969
300 _a848
942 _2ddc
999 _c15769
_d15769